About the Authors

Seung Mi Lee

Affiliations Department of Obstetrics & Gynecology, Seoul National University College of Medicine, Seoul, Korea, Department of Obstetrics & Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Joong Shin Park

jsparkmd@snu.ac.kr

Affiliation Department of Obstetrics & Gynecology, Seoul National University College of Medicine, Seoul, Korea

Errol R. Norwitz

Affiliation Department of Obstetrics & Gynecology, Tufts University School of Medicine, Boston, Massachusetts, United States of America

Sun Min Kim

Affiliation Department of Obstetrics & Gynecology, Seoul National University College of Medicine, Seoul, Korea

JoonHo Lee

Affiliation Department of Obstetrics & Gynecology, Seoul National University College of Medicine, Seoul, Korea

Chan-Wook Park

Affiliation Department of Obstetrics & Gynecology, Seoul National University College of Medicine, Seoul, Korea

Byoung Jae Kim

Affiliations Department of Obstetrics & Gynecology, Seoul National University College of Medicine, Seoul, Korea, Department of Obstetrics & Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Jong Kwan Jun

Affiliation Department of Obstetrics & Gynecology, Seoul National University College of Medicine, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SML JSP. Performed the experiments: SML SMK JHL CWP BJK JKJ. Analyzed the data: SML JSP ERN. Contributed reagents/materials/analysis tools: SML SMK JHL CWP BJK JKJ. Wrote the paper: SML JSP ERN.